NVIDIA Smooth Motion 补帧

[hooke007]

Smooth Motion

使用说明迁移至 #607 (comment)
本帖仅留作讨论反馈专用

[LiJT]

如果我启用了gpu-context=winvk之后，启动mpv，发现之后后台自动播放了视频声音，进程里也有mpv，但是没有看到任何mpv的窗口也没有视频界面，如果换成默认的gpu-context=d3d11发现并没有补帧。。。5090显卡

[hooke007]

用最小化的配置先确保能在vulkan下启动，再去寻找冲突的配置。如果连最小化配置都没法启动，那只能自行寻找是驱动还是其它程序导致的bug了

[Einstein1103]

目前在mpv里vsr和smooth motion是不能一起使用吗，播放器配置里只能d3d11或者winvk任选其一

[LiJT]

是的，而且smooth motion只能winvk使用vulcan，但是mpv在vulcan模式下，拉动播放器窗口，窗口内的视频内容不会随着窗口大小变化而产生缩放，会有滞后感，流畅度不如d3d11，但这个d3d11又没法smooth motion，只能使用 VSR，所以非常非常的尴尬。

[XSpark0]

I think the possible reason Smooth Motion doesn't work in D3D11 is probably because D3D11 in MPV doesn't activate G-Sync/FreeSync unlike WinVK. On my LG UltraGear Monitor, when i set gpu-context=winvk, the hertz of monitor is moving around where as with gpu-context=d3d11, hertz of monitor remains constant at max hertz of monitor. Check your Monitor's OSD too.
There must be some way to get MPV to make refresh rate variable instead of constant with gpu-context=d3d11. MPV Manual might have some mpv.conf commands for it i don't know.
We may have VSR and Smooth Motion working together in D3D11, if indeed that's the reason Smooth Motion isn't working in gpu-context=d3d11.

[hooke007]

My display device is projector. It doesn't support any modern sync techniques.

[meidoqt]

But 'Smooth Motion' and VRR/G-SYNC are different things entirely. You can easily get VRR/G-SYNC with d3d11, you just have to combine it with hwdec=auto-copy, d3d11va-copy, or vulkan-copy.

[XSpark0]

Tried it. It didn't activate VRR/G-Sync for me. Monitor hertz remained constant instead of variable. Also tried drm-vrr-enabled=yes which didn't work.

[XSpark0]

Besides Smooth Motion broke with latest Windows 11 Update and or Nvidia App update as it now causes flickering with gpu-context=winvk. Smooth Motion flickering only happens in MPV. It doesn't happen in MPC-BE.

[malagege]

最近嘗試 Nvidia Smooth Motion，一直在等正式版，沒想到已經正式版，台灣 Nvidia APP 中文顯示叫平滑運動。

發現播放會有閃爍問題，上面 XSpark0 有提到 Windows 更新(KB5074109)造成閃爍問題，我後來移除安裝可解決閃爍問題，大家有遇到可以參考看看。

Details

快速移除指令

 wusa /uninstall /kb:5074109

有遇到移除失敗(800F0825)，移除 Windows 沙箱(Sandbox)，就可以順利移除 KB5074109。

[LiJT]

而且无论是 --video-sync=audio 还是 --video-sync=display-resample，使用Nvidia的AI补帧，都会偶尔出现爆音，声音短暂的破裂的问题！
不仔细听听不出来，但是播一段时间后（5分钟左右）就会反复的出现！关闭后再次播放则问题消失，播五分钟后又会出现，然后就开始不间断的在切换场景的时候出现爆音！

[hooke007]

#599 (comment)